CN113031169B

CN113031169B - Prefabricated connector, coupler and prefabricated connector assembly

Info

Publication number: CN113031169B
Application number: CN202110574680.8A
Authority: CN
Inventors: 缪冬青; 孙建华; 蒲维; 王建兵; 赵玉立; 刘月祥; 姚秋飞
Original assignee: Jiangsu Zhongtian Technology Co Ltd; Zhongtian Broadband Technology Co Ltd
Current assignee: Jiangsu Zhongtian Technology Co Ltd; Zhongtian Broadband Technology Co Ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-08-31
Anticipated expiration: 2041-05-26
Also published as: EP4145201A1; CN113031169A; MX2023000095A; BR112022027032A2; EP4145201A4; WO2022247081A1; CL2023000083A1; AR124225A1

Abstract

The invention provides a prefabricated connector, a coupler and a prefabricated connector assembly, and relates to the technical field of optical cable connection. The invention solves the technical problems that the connection operation between the existing prefabricated connector and the coupler is troublesome and the connection part is easy to break, and achieves the technical effects of convenient and quick connection and reliable connection between the prefabricated connector and the coupler.

Description

Prefabricated connector, coupler and prefabricated connector assembly

Technical Field

The invention relates to the technical field of optical fiber connection, in particular to a prefabricated connector, a coupler and a prefabricated connector assembly.

Background

With the large-scale construction of FTTH, the network is deeply influencing our life, the deployment of optical fiber network, the arrangement of optical cable is an extremely important link, the terminal end of the optical cable mainly adopts the mode of welding pigtail and assembling quick connector on site at present, but the mechanical property and environmental resistance are poor, which can cause dust and water to enter equipment and seriously influence the transmission performance of the line, therefore, a connector with convenient installation, good protection performance and excellent mechanical performance is needed to realize the connection between optical fibers, and the use requirements and habits of domestic and foreign users can be met. In the prior art, the prefabricated connector and the coupler are connected in a rotary buckle structure mode, but the connection strength of the buckle structure is low, and the problem of fracture is easy to occur.

Disclosure of Invention

The invention aims to provide a prefabricated connector, a coupler and a prefabricated connector assembly which are convenient and quick to install and reliable in connection, and solves the technical problems that in the prior art, the connection part between the prefabricated connector and the coupler is low in strength and easy to break.

The invention provides a prefabricated connector, which is suitable for being butted with a coupler, and comprises the following components:

the connector shell assembly is provided with a ferrule assembly mounting cavity at a first end and an optical cable leading-in cavity communicated with the ferrule assembly mounting cavity at a second end;

the ferrule assembly is arranged in the ferrule assembly mounting cavity and is suitable for optical fiber insertion connection of an optical cable introduced from the optical cable introduction cavity;

a connector clamping part is arranged on the outer wall of the first end of the connector shell assembly and is used for rotating into a coupler metal buckle arranged on the coupler after the prefabricated connector and the coupler are oppositely inserted in place;

or

The connector shell assembly is characterized in that a connector metal buckle is arranged at the first end of the connector shell assembly, and the connector metal buckle is used for acting as the prefabricated connector and the coupler are inserted in place, so that the coupler clamping portion on the coupler can rotate into the connector metal buckle.

Further, a connector protective cap is docked with the first end of the connector housing assembly;

the connector protective cap is provided with a first buckle, and the first buckle is used for enabling the connector clamping part to rotate into the first buckle after the connector shell assembly and the connector protective cap are oppositely inserted in place;

or

The connector protective cap is provided with a first clamping portion, and the first clamping portion is used for acting as the connector shell assembly and the connector protective cap are suitable for rotating into the connector metal buckle after being inserted in place.

Further, the connector helmet is sleeved with a first helmet sealing ring, the connector clamping portion is connected with the first buckle in a screwed mode, and the first end portion of the connector shell assembly is matched with the connector helmet to compress the first helmet sealing ring.

Furthermore, a second protective cap sealing ring is arranged between the outer wall of the connector protective cap and the inner wall of the first end of the connector shell assembly.

Further, the connector helmet includes the helmet main part, and follows helmet main part outer wall sets up the round limit of round, first buckle sets up the round edge.

Further, connector joint portion sets up for along the circumferential direction first joint boss on the first end outer wall of connector housing assembly, the shaping has first inclined plane on the first end of first joint boss, forms the screw in end of screwing in coupler metal buckle or the first buckle.

Furthermore, the second end shaping of first joint boss has first spacing arch, first spacing arch is used for first joint boss screw in targets in place the back, supports coupler metal buckle or first buckle.

Further, the connector housing assembly includes:

the connector inner shell assembly is internally provided with the inserting core assembly installation cavity and the optical cable leading-in cavity;

the connector shell assembly is arranged outside the connector inner shell assembly, and the connector clamping part or the connector metal buckle is arranged at the first end of the connector shell assembly.

The invention provides a coupler, which is suitable for being butted with the prefabricated connector, and comprises the following components:

the coupler body is internally provided with a sleeve installation cavity;

a sleeve mounted within the sleeve mounting cavity, the sleeve adapted for insertion of a ferrule of the ferrule assembly when the coupler is mated with the pre-manufactured connector;

the coupler body is provided with a coupler metal buckle, and the coupler metal buckle is used for screwing a connector clamping part on the prefabricated connector into the coupler metal buckle after the prefabricated connector and the coupler are oppositely inserted in place;

or

The outer wall of the coupler body is provided with a coupler clamping portion, and the coupler clamping portion is used for screwing the prefabricated connector into the connector metal buckle on the prefabricated connector after the prefabricated connector and the coupler are oppositely inserted in place.

Further, the coupler protection cap is butted with the coupler body;

the coupler protective cap is provided with a second clamping part, and the second clamping part is used for screwing the second clamping part into the coupler metal buckle after the coupler body and the coupler protective cap are inserted in place;

or

The coupler protective cap is provided with a second buckle, and the second buckle is used for being suitable for the coupler clamping part to be screwed into the second buckle after the coupler body and the coupler protective cap are oppositely inserted in place.

Further, the cover is equipped with the third helmet sealing washer on the coupler body, connector joint portion or second joint portion with when coupler metal buckle screw in is connected, the first end tip of connector housing assembly or the tip of coupler helmet with the cooperation of coupler body will the third helmet sealing washer compresses tightly.

Furthermore, a fourth protective cap sealing ring is arranged between the inner wall of the coupler protective cap and the outer wall of the coupler body.

Further, the coupler metal snap comprises: the connector comprises a first plate and a second plate which are arranged oppositely, and a third plate which is used for connecting the first plate and the second plate to form a clamping groove, wherein the first plate is connected to the coupler body, the end face of one end, which is not connected with the first plate, of the second plate is formed into an arc-shaped face, and the arc-shaped face is suitable for being matched with the arc-shaped outer wall of the connector shell assembly or the arc-shaped outer wall of the coupler protective cap.

Further, the coupler body includes:

the outer end of the coupler comprises a coupler outer end main body with an outer end through cavity and a sleeve installation cavity arranged at the first end of the coupler outer end main body, the coupler outer end main body is suitable for being in butt joint with the prefabricated connector or the coupler protective cap, one end of the sleeve installation cavity extends into the outer end through cavity, and the other end of the sleeve installation cavity extends out of the outer end through cavity;

the inner end of the coupler is provided with an inner end through cavity, when the first end of the inner end of the coupler is connected with the first end of the outer end of the coupler, the inner end through cavity is suitable for the sleeve installation cavity to be inserted into the inner end through cavity, and the second end of the inner end of the coupler is an external thread end;

the locking nut is in threaded connection with the second end of the inner end of the coupler;

and a mounting groove is formed between the abutting surfaces of the outer end of the coupler or the inner end of the coupler, and the first plate is arranged in the mounting groove and is fixedly abutted with the outer end of the coupler.

Furthermore, an outer end flange plate is arranged at the first end of the outer end main body of the coupler, and the sleeve installation cavity is fixedly arranged on the outer end flange plate;

an inner end flange plate is arranged at the first end of the inner end of the coupler, and the inner end of the coupler and the outer end of the coupler are connected into a whole through butt joint of the outer end flange plate and the inner end flange plate;

the butt joint face of the inner flange plate is provided with the mounting groove, one side, back to the inner end of the coupler, of the outer end flange plate is provided with an annular skirt edge, and the position, corresponding to the coupler metal buckle, of the annular skirt edge is provided with an avoiding notch.

Furthermore, second joint portion is for setting up along the circumferential direction second joint boss on the outer wall of coupler helmet, the shaping has the second inclined plane on the first end of second joint boss, forms the screw in end of screwing in coupler metal buckle or the second buckle.

Furthermore, the second end shaping of second joint boss has the spacing arch of second, the spacing arch of second is used for the second joint boss screw in targets in place the back, supports coupler metal buckle or second buckle.

The invention provides a prefabricated connector assembly, which comprises the prefabricated connector and the coupler.

The prefabricated connector and the coupler provided by the invention adopt a direct-insertion rotary type connection mode of the clamping part and the metal buckle, and the connection can be realized only by inserting the prefabricated connector and the coupler in place and rotating the prefabricated connector and the coupler, so that the connection operation is stable and accurate, the convenience of operation is increased, and the connection strength of the connection part is enhanced and the connection reliability of the prefabricated connector and the coupler is improved because the buckle is made of a metal material different from the coupler or the prefabricated connector.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an exploded view of a prefabricated connector according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a prefabricated connector according to an embodiment of the present invention;

FIG. 3 is an exploded view of a coupler provided by an embodiment of the present invention;

FIG. 4 is an assembled view of a coupler according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a coupler provided by an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a pre-manufactured connector assembly from a first perspective provided by an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a prefabricated connector assembly from a second perspective as provided by an embodiment of the present invention;

FIG. 8 is a schematic structural view of a guide member provided in accordance with an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a tail handle provided in accordance with an embodiment of the present invention;

fig. 10 is a schematic structural view of a protective inner sleeve according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view of a protective inner sleeve provided in accordance with an embodiment of the present invention;

FIG. 12 is a schematic structural view of a protective tail sleeve according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a protective outer cover according to an embodiment of the present invention;

FIG. 14 is a front view of a connector protective cap provided in accordance with an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a bending-resistant boot provided in accordance with an embodiment of the present invention;

fig. 16 is a schematic structural diagram of an outer end of a coupler according to a first view angle;

FIG. 17 is a schematic structural diagram of an outer end of a coupler according to a second perspective view of the present invention;

FIG. 18 is a cross-sectional view of the outer end of the coupler provided by an embodiment of the present invention;

FIG. 19 is a schematic diagram of an inner end of a coupler from a first perspective according to an embodiment of the present invention;

FIG. 20 is a schematic diagram of an inner end of a coupler from a second perspective according to an embodiment of the present invention;

FIG. 21 is a cross-sectional view of a coupler shield cap provided in accordance with an embodiment of the present invention;

fig. 22 is a metal clasp of a coupler according to an embodiment of the present invention;

fig. 23 is a schematic structural diagram of a lock nut according to an embodiment of the present invention.

Icon: 1-a guide; 101-a guide key; 2-a guide inner housing; 3-inserting core; 4-an elastic member; 5-tail handle; 501-arc boss; 502-open slot; 6-crimping the tube; 7-protective inner sleeves; 701-annular clamping table; 702-an annular clip portion; 703-the boss is clamped into the groove; 704-a second abutment step; 705-a fourth seal groove; 706-a connecting plate; 707-key way; 708-a baffle; 709-a second seal groove; 710-a first mating face; 8-sealing rings are sleeved inside and outside; 9-a cable seal; 10-protective tail sleeve; 1001-third seal groove; 1002-tail sleeve sealing groove; 1003-boss; 1004 — tail sleeve opening; 1005-annular ribs; 1006 — a first abutment step; 11-boot seal; 12-a protective outer cover; 1201-connector snap-in part; 1202-a first stop lug; 1203-a first inclined plane; 1204-convex texture; 1205-annular boss; 13-bending-resistant tail sleeve; 1301-a ring-shaped insertion end; 1302-tail sleeve ring ribs; 1303 — a first connecting tab annular groove; 1304-bending-resistant tail sleeve annular clamping groove; 14-an optical cable; 15-connector dust cap; 16-connector protective cap; 1601-a second connecting piece annular groove; 1602-a first buckle; 1603-tail handle with holes; 17-a first protective cap sealing ring; 18-a second helmet seal ring; 19-connector tab; 20-the coupler outer end; 2001-outer end flange; 2002-positioning holes; 2003-an annular skirt; 2004-avoid gaps; 2006-square positioning grooves; 2007-annular locating grooves; 2008-a cannula installation cavity; 2010-cylindrical tube opening; 2011-limit bumps; 2012-snap; 2014-outer end guide groove; 21-coupler inner end; 2101-inner end flange; 2102-square positioning boss; 2103-annular locating projections; 2104-mounting grooves; 2105-inner end guide groove; 22-coupler metal snap; 2201-a first plate; 2202-a second plate; 2203-a third plate; 23-a sleeve; 24-a locking nut; 2401-compression lobes; 25-locknuts; 26-a fourth protective cap seal ring; 27-a third protective cap sealing ring; 28-coupler protective cap; 2801-a second snap-in part; 2802-a second bevel; 2803-a second stop boss; 2804-a third web annular groove; 2805-coupler helmet tail handle; 29-coupler dust cap; 30-coupler connection pads.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The cable 14 includes an optical fiber, a strength member disposed about the optical fiber, and a cable jacket surrounding the optical fiber and the strength member.

As shown in fig. 1-2 and 6-15, the embodiment provides a prefabricated connector, which is suitable for being butted with a coupler, and comprises a connector housing assembly and a ferrule assembly, wherein the first end of the connector housing assembly is formed with a ferrule assembly mounting cavity, and the second end is formed with a cable introducing cavity communicated with the ferrule assembly mounting cavity; the ferrule assembly is arranged in the ferrule assembly mounting cavity and is suitable for optical fiber insertion connection of an optical cable 14 introduced from the optical cable introduction cavity;

the outer wall of the first end of the connector shell assembly is provided with a connector clamping portion 1201, and the connector clamping portion 1201 is used for rotating into a coupler metal buckle 22 arranged on the coupler after the prefabricated connector and the coupler are inserted in place.

Realize being connected of prefabricated connector and coupler through buckle and joint portion, connect convenient and fast, only need insert the back that targets in place, with joint portion rotatory go into in the buckle can. And because when connecting, with the coupler with the great easy fracture that takes place of buckle department atress of material integrated into one piece, in order to improve the intensity of buckle, set the buckle on the coupler into the metal material alone, can improve the life of coupler, the reliability that reinforcing prefabricated connector and coupler are connected.

Further, prefabricated connector still includes the connector helmet 16 with the first end butt joint of connector housing subassembly, and connector helmet 16 forms protective housing after with the butt joint of connector housing subassembly, can play the guard action to the lock pin subassembly in the connector housing subassembly. When a pre-manufactured connector needs to be mated with a coupler, the connector shield cap 16 need only be removed. As shown in fig. 14, the connector protective cap 16 is provided with a first catch 1602, and the first catch 1602 is adapted to rotate the connector clamping portion 1201 into the first catch 1602 after the connector housing assembly and the connector protective cap 16 are inserted into place.

Due to the structural arrangement, the connector clamping portion 1201 of the connector shell assembly can be used for butt joint with the coupler and can also be used for butt joint with the connector protective cap 16, and the structure is more simplified.

As shown in fig. 2, a first protective cap sealing ring 17 is sleeved on the connector protective cap 16, and when the connector clamping portion 1201 and the first buckle 1602 are screwed in and connected, the first end of the connector housing assembly is matched with the connector protective cap 16 to press the first protective cap sealing ring 17. The arrangement of the first protective cap sealing ring 17 can compress the first protective cap sealing ring 17 when the connector shell assembly is screwed in and connected with the connector protective cap 16, so that axial force is formed between the connector shell assembly and the connector protective cap 16, and reliable sealing performance is guaranteed.

Further, a second protective cap seal ring 18 is disposed between the outer wall of the connector protective cap 16 and the inner wall of the first end of the connector housing assembly. The second helmet seal ring 18 is disposed to form a second seal between the connector housing assembly and the connector helmet 16, thereby further improving the reliability of the seal between the connector housing assembly and the connector helmet 16.

Specifically, as shown in fig. 14, the connector protective cap 16 includes a protective cap body, and a circle of round edges is disposed along the outer wall of the protective cap body, and the first buckle 1602 is disposed on the round edges. First buckle 1602 is provided with two on the round edge symmetry, certainly also can set up threely, or four wait, and the setting on round edge can compress tightly first helmet sealing washer 17 with the tip cooperation of the first end of connector housing assembly.

As shown in fig. 13, the connector clamping portion 1201 is a first clamping boss disposed on an outer wall of the first end of the connector housing assembly along the circumferential direction, and a first inclined plane 1203 is formed on the first end of the first clamping boss to form a screwing end screwed into the coupler metal buckle 22 or the first buckle 1602. The first inclined surface 1203 is disposed to facilitate the connector clip 1201 to smoothly screw into the coupler metal clip 22 or the first clip 1602.

A first limiting protrusion 1202 is formed at the second end of the first clamping boss, and the first limiting protrusion 1202 is used for abutting against the coupler metal buckle 22 or the first buckle 1602 after the first clamping boss is screwed in place.

The connector housing assembly includes:

the connector inner shell assembly is internally provided with a ferrule assembly installation cavity and an optical cable leading-in cavity;

the connector shell assembly is arranged outside the connector inner shell assembly, and the connector clamping portion 1201 or the connector metal buckle is arranged at the first end of the connector shell assembly.

As shown in fig. 1 and 2, the ferrule assembly comprises a ferrule 3, a guide assembly, a tail handle 5, an elastic member 4, and a crimping tube 6, wherein a ferrule installation cavity for installing the ferrule 3 is formed on the guide assembly; the tail handle 5 is provided with a through cavity, the first end of the tail handle 5 is suitable for being connected with the guide assembly, and the side wall of the second end of the tail handle 5 is provided with an open slot 502 communicated with the through cavity; the crimp tube 6 is sleeved outside the tail shank 5, as shown in fig. 9, the strength member of the optical cable is adapted to pass out from the open groove 502 into the space between the crimp tube 6 and the tail shank 5, and the strength member is crimped between the crimp tube 6 and the tail shank 5 under the action of the crimping force. Two open slots 502 are symmetrically arranged on the tail handle 5, and the two open slots 502 are formed by two arc-shaped bosses 501 at intervals.

The crimp tube 6 is preferably a crimp aluminum tube, preferably having threads formed on the inner wall thereof. When two reinforcing members of the optical cable respectively penetrate out of the two open grooves 502 of the tail handle 5 and enter the space between the crimping pipe 6 and the tail handle 5 to be crimped, the friction force after crimping can be enhanced by the arrangement of the threads, and the tensile strength is enhanced.

Specifically, as shown in fig. 1 and 2, the guide assembly includes a guide 1 and a guide inner shell 2, a ferrule installation cavity is formed on the guide inner shell 2, and the guide inner shell 2 is connected in the guide 1.

Further, the prefabricated connector further comprises a connector dust cap 15 which is inserted into the ferrule assembly and is used for preventing dust of the ferrule 3.

The connector shell assembly comprises a connector inner shell assembly and a connector outer shell assembly, wherein a ferrule assembly mounting cavity and an optical cable leading-in cavity are formed in the connector inner shell assembly; the connector shell assembly is arranged outside the connector inner shell assembly, and the connector clamping portion 1201 is arranged on the inner wall of the first end of the connector shell assembly and is arranged on the protective outer sleeve 12 during specific implementation.

Further, as shown in fig. 10-12, the connector inner shell assembly includes a protective inner sleeve 7 and a protective tail sleeve 10, a ferrule assembly mounting cavity is formed at a first end of the protective inner sleeve 7, the ferrule assembly is mounted in the ferrule assembly mounting cavity, and the first end of the protective inner sleeve 7 includes two oppositely disposed baffles 708, the two baffles 708 are adapted to be inserted into two positioning holes 2002 of the coupler when the prefabricated connector is mated with the coupler; the protective tail sleeve 10 is provided with a cavity suitable for the optical cable 14 to pass through, the first end of the protective tail sleeve 10 is connected into the second end of the protective inner sleeve 7, and a sealing element is arranged between the protective inner sleeve 7 and the protective tail sleeve 10.

The baffle 708 on the inner protective sleeve 7 can be inserted into the positioning hole 2002 of the coupler when the coupler is butted, so that the connection stability of the prefabricated connector and the coupler is enhanced.

As shown in fig. 11, the bottom of the ferrule assembly mounting cavity is a first mating surface 710, which is adapted to abut against the arc-shaped boss 501 on the tail stem 5 to form a limiting and fixing function for the tail stem 5; as shown in fig. 8, the guide member 1 is provided with a guide key 101, as shown in fig. 10, a connecting plate 706 is provided between the two baffles 708, and a key groove 707 suitable for inserting the guide key 101 is formed on the connecting plate 706. The guide key 101 and the key groove 707 are matched to realize the connection and positioning of the ferrule assembly and the protective inner sleeve 7, and play a role in preventing rotation.

A second sealing groove 709 is formed at the bottom of an insertion cavity, into which the protection tail sleeve 10 is inserted, of the second end of the protection inner sleeve 7, and a tail sleeve sealing groove 1002 is formed at a port of the first end of the protection tail sleeve 10; a third sealing groove 1001 is formed in the outer wall of the first end of the protective tail sleeve 10, and the sealing elements comprise an optical cable sealing element 9 arranged in a sealing cavity defined by the matching of a tail sleeve sealing groove 1002 and a second sealing groove 709, and a tail sleeve sealing element 11 arranged between the inside of the third sealing groove 1001 and the inner wall of the protective inner sleeve 7; the setting of two sealing members can play waterproof dustproof effect effectively, prevents that water and dust from getting into the lock pin subassembly installation intracavity.

Annular card portion 702 is formed on the inner wall of the second end port of the protection inner sleeve 7, the first end side wall of the protection tail sleeve 10 is formed with a first abutting step 1006, after the first end of the protection tail sleeve 10 is inserted into the protection inner sleeve, the first abutting step 1006 abuts against the annular card portion 702, the clamping connection with the protection inner sleeve 7 is achieved, and the clamping connection fixation is more convenient and faster than thread fixing and thermal contraction.

Further, as shown in fig. 11 and 12, a boss snap-in groove 703 is formed at the second end of the protective inner sleeve 7, a boss 1003 is formed on the protective tail sleeve 10, and when the first end of the protective tail sleeve 10 is inserted into the second end of the protective inner sleeve 7, the boss 1003 is adapted to be snapped into the boss snap-in groove 703. The boss snap-in groove 703 is coupled with the boss 1003, so that the protective inner sleeve 7 and the protective tail sleeve 10 can be positioned, rotation is prevented, and accurate positioning of the prefabricated connector is guaranteed.

Two tail sleeve openings 1004 are oppositely arranged on the second end of the protection tail sleeve 10, and an annular rib 1005 is also arranged on the inner wall of the second end of the protection tail sleeve 10. When the optical cable is led in from the second end of the protective tail sleeve 10, the second end provided with the tail sleeve opening 1004 can clamp the optical cable, and the annular ribs 1005 can enhance the fixing force with the optical cable.

As shown in fig. 2, the connector housing assembly includes a protective outer shell 12, and a bending-resistant tail sleeve 13, and a connector clamping portion 1201 is provided on a first end of the protective outer shell 12.

As shown in fig. 13, the inner wall of the second end of the protective outer jacket 12 is formed with an annular boss 1205. as shown in fig. 15, the first end of the buckle tail sleeve 13 is formed with an annular insertion end 1301, the annular insertion end 1301 being adapted to be inserted into the annular boss 1205. As shown in fig. 11, an annular clamping table 701 and a second abutting step 704 are sequentially formed on the outer wall of the second end of the inner protective sleeve 7; as shown in fig. 15, an anti-bending tail sleeve annular groove 1304 is formed on an inner wall of a first end of the anti-bending tail sleeve 13, the protective inner sleeve 7 is installed in the protective outer sleeve 12, a second end of the protective inner sleeve 7 is suitable to penetrate out from a second end of the protective outer sleeve 12 and be inserted into the anti-bending tail sleeve 13, the second end of the protective inner sleeve 7 abuts against the step 704 and abuts against the annular boss 1205, and the annular clamping table 701 is clamped into the anti-bending tail sleeve annular groove 1304, so that connection with the anti-bending tail sleeve 13 is achieved. The second end of the protective tail sleeve 10 is adapted to be inserted into the bend resistant tail sleeve 13. The outer side wall of the protective outer sleeve 12 is also provided with convex grains 1204 to increase the hand feeling during operation.

Further, a sealing structure is further arranged between the outer wall of the inner protective sleeve 7 and the inner wall of the outer protective sleeve 12, and the sealing structure preferably comprises a fourth sealing groove 705 arranged on the inner protective sleeve 7 and an inner and outer sleeve sealing ring 8 arranged in the fourth sealing groove 705.

A first connecting piece annular groove 1303 is formed in the outer wall of the second end of the bending-resistant tail sleeve 13, a second connecting piece annular groove 1601 is formed in the outer wall of the second end of the connector protective cap 16, a first end of the connector connecting piece 19 is arranged in the first connecting piece annular groove 1303, a second end of the connector connecting piece is arranged in the second connecting piece annular groove 1601, and the connector protective cap 16 is connected with the bending-resistant tail sleeve 13. The connector protective cap 16 is provided with a tail handle 1603 with a hole; the outer wall of the bending-resistant tail sleeve 13 is provided with tail sleeve annular ribs 1302.

As shown in fig. 3-5 and 16-23, a coupler of the present embodiment, adapted to mate with the prefabricated connector, includes:

a coupler body, in which a sleeve installation cavity 2008 is provided;

the sleeve 23 is arranged in the sleeve installation cavity 2008, and when the coupler is butted with the prefabricated connector, the sleeve 23 is suitable for inserting the ferrule 3 of the ferrule assembly;

the coupler body is provided with a coupler metal buckle 22, and the coupler metal buckle 22 is used for screwing the connector clamping part 1201 on the prefabricated connector into the coupler metal buckle 22 after the prefabricated connector and the coupler are inserted in place.

The coupler protective shell further comprises a coupler protective cap 28 which is in butt joint with the coupler body, and a protective shell can be formed after the coupler protective cap 28 is in butt joint with the coupler body. When the coupler needs to be mated with a pre-manufactured connector, the coupler shield cap 28 need only be removed. The coupler protective cap 28 is provided with a second clamping portion 2801, and the second clamping portion 2801 is suitable for the second clamping portion 2801 to be screwed into the coupler metal buckle 22 after the coupler body and the coupler protective cap 28 are inserted in place.

Due to the structural arrangement, the coupler metal buckle 22 on the coupler can be used for butt joint with the coupler protective cap 28 and can also be used for butt joint with the connector clamping portion 1201 on the prefabricated connector, and the structure is more simplified.

The coupler body is sleeved with a third protective cap sealing ring 27, and when the connector clamping portion 1201 or the second clamping portion 2801 is screwed in and connected with the coupler metal buckle 22, the first end portion of the connector shell assembly or the end portion of the coupler protective cap 28 is matched with the coupler body to compress the third protective cap sealing ring 27. The setting of third helmet sealing washer 27 can compress third helmet sealing washer 27 when coupler body and connector housing assembly or coupler helmet 28 screw in are connected to form the axial force between coupler body and connector housing assembly or coupler helmet 28, guarantee reliable leakproofness.

A fourth protective cap seal ring 26 is provided between the inner wall of the coupler protective cap 28 and the outer wall of the coupler body. The fourth protective cap seal ring 26 is arranged to form a second seal between the coupler body and the connector housing assembly or the coupler protective cap 28, so as to further improve the reliability of the seal between the coupler body and the connector housing assembly or the coupler protective cap 28.

As shown in fig. 22, the coupler metal clip 22 includes: the connector comprises a first plate 2201, a second plate 2202 and a third plate 2203, wherein the first plate 2201 and the second plate 2202 are arranged oppositely, the third plate 2203 connects the first plate 2201 and the second plate 2202 to form a clamping groove, the first plate 2201 is connected to the coupler body, the end face of one end, which is not connected with the first plate 2201, of the second plate 2202 is shaped into an arc-shaped face, and the arc-shaped face is suitable for being matched with the arc-shaped outer wall of the connector shell assembly or the arc-shaped outer wall of the coupler protective cap 28.

The coupler body comprises a coupler outer end 20, a coupler inner end 21 and a locking nut 24, wherein the coupler outer end 20 comprises a coupler outer end main body with an outer end through cavity and a sleeve installation cavity 2008 arranged at a first end of the coupler outer end main body, the coupler outer end main body is suitable for being butted with a prefabricated connector or a coupler protective cap 28, one end of the sleeve installation cavity 2008 extends into the outer end through cavity, and the other end extends out of the outer end through cavity;

an inner end through cavity is formed in the coupler inner end 21, when the first end of the coupler inner end 21 is connected with the first end of the coupler outer end 20, the inner end through cavity is suitable for inserting the sleeve installation cavity 2008 into the inner end through cavity, and the second end of the coupler inner end 21 is an external thread end;

a locking nut 24 is threaded onto a second end of the coupler inner end 21;

a mounting groove 2104 is formed between the abutting surfaces of the outer end 20 of the coupler or the inner end 21 of the coupler, and the first plate 2201 is disposed in the mounting groove 2104 and is fixed to the inner end 21 of the coupler by abutting the outer end 20 of the coupler. The coupler outer end 20 and the coupler inner end 21 are connected by welding, such as ultrasonic welding.

Specifically, as shown in fig. 16-20, an outer end flange 2001 is disposed at a first end of the outer end body of the coupler, and the sleeve installation cavity 2008 is fixedly disposed on the outer end flange 2001;

an inner end flange 2101 is arranged at the first end of the inner end 21 of the coupler, and the inner end 21 of the coupler and the outer end 20 of the coupler are connected into a whole by butting the outer end flange 2001 with the inner end flange 2101;

the abutting surface of the inner end flange 2101 is provided with a mounting groove 2104, one side of the outer end flange 2001, which faces away from the inner end 21 of the coupler, is provided with an annular skirt 2003, and the position of the annular skirt 2003, which corresponds to the metal buckle 22 of the coupler, is provided with an avoidance notch 2004.

After the inner end flange 2101 and the outer end flange 2001 are welded, the third plate 2203 of the coupler metal buckle 22 is tightly attached to the avoidance notch 2004 and forms a ring of blocking edge with the annular skirt 2003, and the structure arrangement can protect the third protection cap sealing ring 27.

The second clamping portion 2801 is a second clamping boss disposed on the outer wall of the coupler protective cap 28 along the circumferential direction, and a second inclined plane 2802 is formed at a first end of the second clamping boss to form a screwing end screwed into the coupler metal buckle 22 or the second buckle. The second inclined surface 2802 can facilitate the second clamping portion 2801 to be smoothly screwed into the coupler metal buckle 22.

Second limiting protrusions 2803 are formed at the second ends of the second clamping bosses, and the second limiting protrusions 2803 are used for abutting against the coupler metal buckle 22 or the second buckle after the second clamping bosses are screwed in place.

In order to prevent the locking nut 24 from being fixed loosely, a locknut 25 is further included at a second end of the coupler inner end 21, and as shown in fig. 23, a compression protrusion 2401 is provided on a side of the locknut 24 facing the locknut 25. The number of the compression protrusions 2401 is uniformly set, for example, four. In use, the coupler is secured to the device by the lock nut 24 and then the locknut 25 is tightened, during which the compression lobes 2401 are compressively deformed. A pretightening force is formed between the locking nut 24 and the locknut 25, so that the fixation can be effectively prevented from loosening, and the stability of the fixation is ensured.

As shown in fig. 21, a third connecting piece annular groove 2804 is further formed in the outer wall of the coupler protective cap 28, a first end of a coupler connecting piece 30 is arranged in the third connecting piece annular groove 2804, a second end of the coupler connecting piece 30 is arranged between the inner end flange 2101 and the lock nut 24, the coupler protective cap 28 can be connected with the coupler body through the coupler connecting piece 30, and meanwhile, a first-stage seal can be formed at the second end of the coupler connecting piece 30. The coupler shield cap 28 has a coupler shield cap tail handle 2805 thereon.

Further, as shown in fig. 16-20, two positioning holes 2002 are formed in the outer end flange 2001 around the sleeve installation cavity 2008, and the positioning holes 2002 are suitable for inserting the baffle 708 on the protective inner sleeve 7 of the prefabricated connector;

the outer end flange 2001 and the inner end flange 2101 are waist-shaped flanges, and preferably, the two positioning holes 2002 are semicircular holes and are symmetrically arranged relative to the center of the outer end flange 2001.

The outer end flange 2001 and the inner end flange 2101 are connected in a welding mode, and a positioning structure is arranged on the contact surface of the outer end flange 2001 and the inner end flange 2101, so that the outer end flange and the inner end flange can be positioned during welding, and meanwhile, the connection strength of the outer end flange and the inner end flange can be enhanced. The detent structure may be of various types, and in this embodiment, preferably includes an annular detent 2007 and a square detent 2006 formed on the surface of the outer end flange 2001, and an annular detent 2103 and a square detent 2102 formed on the surface of the inner end flange 2101. The positioning of the outer end flange 2001 and the inner end flange 2101 is realized by inserting the annular positioning protrusion 2103 into the annular positioning groove 2007 and inserting the square positioning protrusion 2102 into the square positioning groove 2006. Of course, as an alternative embodiment, an annular detent 2007 and a square detent 2006 could be provided on the inner end flange 2101, and an annular detent 2103 and a square detent 2102 could be provided on the outer end flange 2001. During specific setting, two square positioning grooves 2006 are oppositely arranged, the two square positioning grooves are arranged around the center of the outer end flange 2001 and are positioned in the annular positioning groove 2007, the circle center of the annular positioning groove 2007 and the center of the outer end flange 2001 are concentrically arranged, and the annular positioning protrusion 2103 and the square positioning protrusion 2102 are also arranged corresponding to the annular positioning groove 2007 and the square positioning groove 2006, so that description is omitted.

The end face of the first end of the outer end flange 2001 is provided with a fixed seat, a hollow cylindrical pipe is fixed on the outer end flange 2001 through the fixed seat, the first end of the cylindrical pipe is located in the outer end flange 2001, the second end of the cylindrical pipe is located outside the outer end flange 2001, a sleeve installation cavity 2008 is formed in the inner cavity of the cylindrical pipe, a cylindrical pipe opening 2010 is formed in the second end of the cylindrical pipe, and two cylindrical pipe openings 2010 are oppositely arranged. And still be equipped with spacing bump 2011 on the inner wall of the second end of cylinder pipe, spacing bump 2011 can prevent that sleeve 23 from inserting the back, deviates from the second end of cylinder pipe. Two buckles 2012 are oppositely arranged on the fixed seat, the two buckles 2012 are arranged around the cylindrical pipe, and the two buckles 2012 are used for clamping with the coupler dust cap 29.

The inner cavity of the second end of the coupler outer end main body is suitable for inserting the ferrule assembly, an outer end guide groove 2014 is formed in the inner cavity of the coupler outer end main body, an inner end guide groove 2105 is also formed in the inner cavity of the coupler inner end 21, after the coupler inner end 21 and the coupler outer end 20 are welded, the outer end guide groove 2014 is aligned to the inner end guide groove 2105 and is suitable for inserting the guide key 101 of the guide piece 1, and therefore the insertion of the coupler and the prefabricated connector is guided. In addition, the port of the inner cavity of the coupler outer end main body is also formed with an outer end step which is suitable for abutting against the protective inner sleeve 7.

A prefabricated connector assembly of this embodiment comprises a prefabricated connector as described above, and a coupler as described above.

For above-mentioned prefabricated connector, coupler and prefabricated connector subassembly, as replaceable embodiment, can also set up the metal buckle on prefabricated connector, joint portion sets up on the coupler, specifically is:

for the prefabricated connector, a connector metal buckle is arranged at the first end of the connector shell assembly and used for enabling the coupler clamping portion on the coupler to rotate into the connector metal buckle after the prefabricated connector and the coupler are oppositely inserted in place.

Be equipped with first joint portion on the connector helmet 16, first joint portion is used for when connector housing assembly and connector helmet 16 to inserting the back in place, is suitable for in the rotatory connector metal buckle of going into.

For the coupler, a coupler clamping portion is arranged on the outer wall of the coupler body and used for being screwed into the connector metal buckle on the prefabricated connector after the prefabricated connector and the coupler are oppositely inserted in place.

The coupler protective cap 28 is provided with a second buckle, and the second buckle is suitable for the coupler clamping part to be screwed into the second buckle after the coupler body and the coupler protective cap 28 are inserted in place.

The working principle is as follows:

the equipment matched with the assembly is provided with holes according to the size of the coupler, an anti-rotation device is arranged, the coupler is provided with a coupler connecting sheet 30 which penetrates through the holes of the equipment and is fixed by a locking nut 24 and a locknut 25. The connector inside the equipment is connected with the coupler, the guide key 101 on the guide piece 1 of the prefabricated connector aligns to the key groove mark on the coupler and is connected with the coupler, the first matching surface is arranged on the protective inner sleeve 7 to ensure that the ferrule assembly is in a proper position in the connector shell assembly, the protective outer sleeve 12 is screwed and fixed with the coupler, the third protective cap sealing ring 27 is compressed during screwing, axial force is formed between the coupler and the protective outer sleeve 12, and the reliability of connection and sealing is ensured.

The process route is as follows:

the coupler processing technology comprises the following steps: ultrasonic welding is carried out on an outer end flange 2001 of the coupler and an inner end flange 2101 of the coupler, when welding is carried out, a first plate 2201 of a coupler metal buckle 22 is placed into a mounting groove 2104 on an inner end 21 of the coupler and is fixed on the coupler, when welding is carried out, it is necessary to be in line with an inner end guide groove 2105 of the coupler and an outer end guide groove 2014 of the coupler, a square positioning protrusion 2102 and an annular positioning protrusion 2103 on the inner end 21 of the coupler are matched with a square positioning groove 2006 and an annular positioning groove 2007 on an outer end 20 of the coupler respectively, and welding strength is improved; pressing a sleeve 23 (preferably a ceramic sleeve) into one end of a sleeve mounting cavity 2008 on the outer end 20 of the coupler by using a crimping tool; and assembling a coupler protective cap 28, a coupler dustproof cap 29, a coupler connecting sheet 30, a locking nut 24 and a locknut 25 to finish the manufacture of the coupler.

The prefabricated connector processing technology comprises the following steps: penetrating a connector connecting sheet 19, an anti-bending tail sleeve 13, a protective tail sleeve 10, a tail sleeve sealing element 11, an optical cable sealing element 9, a protective outer sleeve 12 and a protective inner sleeve 7 into an optical cable 14, moving the tail sleeve sealing element 11 into a third sealing groove 1001 of the protective tail sleeve 10, and penetrating an inner and outer sleeve sealing ring 8 into a fourth sealing groove 705 of the protective inner sleeve 7; the outer jacket of the optical cable 14 is then stripped, leaving the optical cable unit and the strength members within the optical cable 14, and the crimp tube 6, the tail handle 5, and the elastic member 4 are passed through the optical cable unit within the optical cable 14.

Then stripping the optical cable unit according to the process template, wherein the reserved length of a tight covering layer (an optical cable outer sheath) of the optical cable unit is 20mm, the reserved length of aramid fiber (a reinforcing member) is about 12mm, the reserved length of the optical fiber is about 15mm, and the optical fiber is controlled to ensure that the ferrule assembly is in a natural state in the protective inner sleeve 7 during working, so that additional loss cannot be caused, and the optical performance of the prefabricated connector is ensured; then injecting glue into the ferrule 3; then the optical fiber is penetrated into the inserting core 3 and then is heated and solidified; the inserting core 3 is arranged in the guide piece inner shell 2, the tail handle 5 is pushed into the guide piece inner shell 2, and the tail handle 5 and the guide piece inner shell 2 are fixed in a clamping mode; then, the aramid fiber penetrates between the tail handle 5 and the crimping pipe 6 from the open groove 502 on the tail handle 5, and the crimping machine is used for crimping, so that the optical cable and the ferrule assembly are fixed, and the connector is guaranteed to bear various external forces; grinding, testing and other procedures are carried out to complete the manufacture of the connector;

then, the protective inner sleeve 7 is pushed forwards, the ferrule assembly is arranged in the inner cavity of the protective inner sleeve 7, and the key groove 707 on the protective inner sleeve 7 is matched with the guide key 101 on the guide member 1; then, the optical cable sealing element 9 and the protective tail sleeve 10 are pushed forwards, the protective tail sleeve 10 is pressed into the protective inner sleeve 7, the first abutting step 1006 of the protective tail sleeve 10 is fixedly clamped with the annular clamping part 702 on the protective inner sleeve 7, and the boss clamping groove 703 on the protective inner sleeve 7 is matched with the boss 1003 on the protective tail sleeve 10 to prevent rotation; then the protective outer sleeve 12 is pushed forward, and the annular boss 1205 on the protective outer sleeve 12 is pressed on the second abutting step 704 on the protective inner sleeve 7; then the bending-resistant tail sleeve 13 is pushed forwards, and a bending-resistant tail sleeve annular clamping groove 1304 in the front end of the bending-resistant tail sleeve 13 is matched with the annular clamping table 701 on the protective inner sleeve 7 to form clamping fixation; the annular insertion end 1301 extends into the trailing end of the protective outer jacket 12; attaching a connector protective cap 16; one end of a connector connecting piece 19 is sleeved into a first connecting piece annular groove 1303 on the bending-resistant tail sleeve 13, the other end of the connector connecting piece is sleeved into a second connecting piece annular groove 1601 of the connector protective cap 16, a first protective cap sealing ring 17 and a second protective cap sealing ring 18 are arranged on the connector protective cap 16, and the connector protective cap 16 is connected with the protective outer sleeve 12.

When in use, the coupler protective cap 28, the connector protective cap 16 and the connector dustproof cap 15 are taken down, and then the coupler fixed on the equipment is arranged on the prefabricated connector to realize quick connection; when the connector is mated, the connector engaging portion 1201 of the outer protective cover 12 is to avoid the position of the metal coupler snap 22, and the outer protective cover 12 is rotated after the outer protective cover 12 contacts the fourth protective cap seal 26 to screw the connector engaging portion 1201 into the metal coupler snap 22.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coupler adapted to mate with a pre-manufactured connector having a connector snap (1201) on an outer wall, the coupler comprising:

the coupler body is internally provided with a sleeve installation cavity (2008);

a sleeve (23) mounted in the sleeve mounting cavity (2008), the sleeve (23) being adapted for insertion of a ferrule (3) of a ferrule assembly of the prefabricated connector when the coupler is mated with the prefabricated connector;

it is characterized in that the preparation method is characterized in that,

the coupler body is provided with a coupler metal buckle (22), the coupler metal buckle (22) is used for screwing the connector clamping part (1201) on the prefabricated connector into the coupler metal buckle (22) after the prefabricated connector and the coupler are oppositely inserted in place, and the coupler metal buckle (22) and a part of the coupler body, which is provided with the coupler metal buckle (22), are made of different materials;

the coupler metal clasp (22) comprises: the connector comprises a first plate (2201), a second plate (2202), a third plate (2203) and a connector body, wherein the first plate (2201) and the second plate (2202) are arranged oppositely, the third plate (2203) is used for connecting the first plate (2201) and the second plate (2202) to form a clamping groove, the first plate (2201) is connected to the coupler body, the end face of one end, which is not connected with the third plate (2203), of the second plate (2202) is formed into an arc-shaped face, and the arc-shaped face is suitable for being matched with the arc-shaped outer wall of the connector shell assembly of the prefabricated connector.

2. The coupler of claim 1, further comprising a coupler shield cap (28) interfacing with the coupler body;

a second clamping portion (2801) is arranged on the coupler protective cap (28), and the second clamping portion (2801) is used for enabling the second clamping portion (2801) to be screwed into the coupler metal buckle (22) after the coupler body and the coupler protective cap (28) are oppositely inserted in place;

the arcuate face is adapted to mate with an arcuate outer wall of the coupler shield cap (28).

3. The coupler of claim 2, wherein a third protective cap seal ring (27) is sleeved on the coupler body, and when the connector clamping portion (1201) or the second clamping portion (2801) is screwed into the coupler metal buckle (22), the first end portion of the connector housing assembly or the end portion of the coupler protective cap (28) cooperates with the coupler body to compress the third protective cap seal ring (27).

4. The coupler according to claim 2, wherein a fourth protective cap seal ring (26) is provided between the inner wall of the coupler protective cap (28) and the outer wall of the coupler body.

5. The coupler of any of claims 2-4, wherein the coupler body comprises:

a coupler outer end (20) including a coupler outer end body having an outer end through cavity, and a ferrule mounting cavity (2008) disposed at a first end of the coupler outer end body, the coupler outer end body adapted to interface with the pre-fabricated connector or the coupler protective cap (28), one end of the ferrule mounting cavity (2008) extending into the outer end through cavity and the other end extending out of the outer end through cavity;

the coupler inner end (21) is provided with an inner end through cavity, when the first end of the coupler inner end (21) is connected with the first end of the coupler outer end (20), the inner end through cavity is suitable for the sleeve installation cavity (2008) to be inserted into the inner end through cavity, and the second end of the coupler inner end (21) is an external thread end;

a lock nut (24) threaded onto a second end of the coupler inner end (21);

a mounting groove (2104) is arranged between the abutting surfaces of the outer coupler end (20) or the inner coupler end (21), the first plate (2201) is arranged in the mounting groove (2104), and the outer coupler end (20) and the inner coupler end (21) are abutted and fixed.

6. The coupler according to claim 5, wherein the first end of the outer end body of the coupler is provided with an outer end flange (2001), and the sleeve mounting cavity (2008) is fixed on the outer end flange (2001);

an inner end flange plate (2101) is arranged at the first end of the inner end (21) of the coupler, and the inner end (21) of the coupler and the outer end (20) of the coupler are connected into a whole by butting the outer end flange plate (2001) with the inner end flange plate (2101);

the butt joint surface of the inner end flange plate (2101) is provided with the mounting groove (2104), one side of the outer end flange plate (2001) facing away from the inner end (21) of the coupler is provided with an annular skirt edge (2003), and the position of the annular skirt edge (2003) corresponding to the metal buckle (22) of the coupler is provided with an avoidance notch (2004).

7. The coupler according to any of claims 2-4, wherein the second snap-in portion (2801) is a second snap-in boss circumferentially disposed on an outer wall of the coupler shield cap (28), and a first end of the second snap-in boss is formed with a second bevel (2802) forming a screw-in end for screwing into the coupler metal clip (22) or the second clip.

8. The coupler of claim 7, wherein the second end of the second snap boss is formed with a second stop protrusion (2803), the second stop protrusion (2803) being configured to abut the coupler metal clip (22) or a second clip after the second snap boss is screwed into place.

9. A prefabricated connector assembly, comprising the coupler according to any one of claims 1 to 8, and a prefabricated connector butted with the coupler, wherein the prefabricated connector comprises a connector housing assembly and a ferrule assembly, the first end of the connector housing assembly is formed with a ferrule assembly mounting cavity, and the second end of the connector housing assembly is formed with a cable introducing cavity communicated with the ferrule assembly mounting cavity;

a ferrule assembly disposed within the ferrule assembly mounting chamber and adapted for fiber optic plug-in connection of an optical cable (14) introduced from the cable introduction chamber;

a connector clamping portion (1201) is arranged on the outer wall of the first end of the connector shell assembly of the prefabricated connector.

10. The pre-manufactured connector assembly according to claim 9, further comprising a connector shield cap (16) that interfaces with the first end of the connector housing assembly;

the connector protective cap (16) is provided with a first buckle (1602), and the first buckle (1602) is used for rotating the connector clamping part (1201) into the first buckle (1602) after the connector shell assembly and the connector protective cap (16) are inserted in place.

11. The prefabricated connector assembly of claim 10, wherein a first protective cap sealing ring (17) is sleeved on the connector protective cap (16), and when the connector clamping portion (1201) is screwed and connected with the first buckle (1602), the first end portion of the connector shell assembly is matched with the connector protective cap (16) to press the first protective cap sealing ring (17).

12. The pre-manufactured connector assembly according to claim 10, wherein a second protective cap sealing ring (18) is provided between an outer wall of the connector protective cap (16) and an inner wall of the first end of the connector housing assembly.

13. The pre-manufactured connector assembly according to any one of claims 10-12, wherein the connector shield (16) comprises a shield body and a circumferential bead is provided along an outer wall of the shield body, the first catch (1602) being provided on the circumferential bead.

14. The prefabricated connector assembly of any one of claims 10 to 12, wherein the connector clamping portion (1201) is a first clamping boss circumferentially disposed on an outer wall of the first end of the connector housing assembly, and a first inclined surface (1203) is formed on a first end of the first clamping boss to form a screwing end screwed into the coupler metal clip (22) or the first clip (1602).

15. The prefabricated connector assembly of claim 14, wherein a first stop protrusion (1202) is formed at the second end of the first snap boss, and the first stop protrusion (1202) is configured to abut against the coupler metal clip (22) or the first clip (1602) after the first snap boss is screwed into place.

16. The pre-manufactured connector assembly according to any one of claims 9-12, wherein the connector housing assembly comprises:

a connector housing assembly disposed outside the connector inner housing assembly, the connector snap (1201) being disposed on a first end of the connector housing assembly.